/*!
 * Copyright (c) Microsoft. All rights reserved.
 * Licensed under the MIT license. See LICENSE file in the project.
 */
export declare enum Verb {
    Aggregate = "aggregate",
    Bin = "bin",
    Binarize = "binarize",
    Chain = "chain",
    Concat = "concat",
    Dedupe = "dedupe",
    Derive = "derive",
    Difference = "difference",
    Erase = "erase",
    Fetch = "fetch",
    Fill = "fill",
    Filter = "filter",
    Fold = "fold",
    Groupby = "groupby",
    Impute = "impute",
    Intersect = "intersect",
    Join = "join",
    Lookup = "lookup",
    Merge = "merge",
    Pivot = "pivot",
    Orderby = "orderby",
    Recode = "recode",
    Rename = "rename",
    Rollup = "rollup",
    Sample = "sample",
    Select = "select",
    Spread = "spread",
    Unfold = "unfold",
    Ungroup = "ungroup",
    Union = "union",
    Unorder = "unorder",
    Unroll = "unroll",
    Window = "window"
}
export declare enum MergeStrategy {
    FirstOneWins = "first one wins",
    LastOneWins = "last one wins",
    Concat = "concat",
    CreateArray = "array"
}
export declare enum DataType {
    Array = "array",
    Boolean = "boolean",
    Date = "date",
    Number = "number",
    String = "string",
    Text = "text",
    Object = "object",
    Undefined = "undefined",
    Unknown = "unknown"
}
export declare enum MathOperator {
    Add = "+",
    Subtract = "-",
    Multiply = "*",
    Divide = "/"
}
export declare enum NumericComparisonOperator {
    Equals = "=",
    NotEqual = "!=",
    LessThan = "<",
    LessThanOrEqual = "<=",
    GreaterThan = ">",
    GreaterThanOrEqual = ">=",
    IsEmpty = "is empty",
    IsNotEmpty = "is not empty"
}
export declare enum StringComparisonOperator {
    Equal = "equals",
    NotEqual = "is not equal",
    Contains = "contains",
    StartsWith = "starts with",
    EndsWith = "ends with",
    IsEmpty = "is empty",
    IsNotEmpty = "is not empty"
}
export declare enum SetOp {
    Concat = "concat",
    Union = "union",
    Intersect = "intersect",
    Difference = "difference"
}
export declare enum SortDirection {
    Ascending = "asc",
    Descending = "desc"
}
export declare enum FilterCompareType {
    Value = "value",
    Column = "column"
}
/**
 * This is the subset of aggregate functions that can operate
 * on a single field so we don't accommodate additional args.
 * See https://uwdata.github.io/arquero/api/op#aggregate-functions
 */
export declare enum FieldAggregateOperation {
    Any = "any",
    Count = "count",
    CountDistinct = "distinct",
    Valid = "valid",
    Invalid = "invalid",
    Max = "max",
    Min = "min",
    Sum = "sum",
    Product = "product",
    Mean = "mean",
    Mode = "mode",
    Median = "median",
    StandardDeviation = "stdev",
    StandardDeviationPopulation = "stdevp",
    Variance = "variance",
    CreateArray = "array_agg",
    CreateArrayDistinct = "array_agg_distinct"
}
/**
 * These are operations that perform windowed compute.
 * See https://uwdata.github.io/arquero/api/op#window-functions
 */
export declare enum WindowFunction {
    RowNumber = "row_number",
    Rank = "rank",
    PercentRank = "percent_rank",
    CumulativeDistribution = "cume_dist",
    FirstValue = "first_value",
    LastValue = "last_value",
    FillDown = "fill_down",
    FillUp = "fill_up"
}
export declare enum BinStrategy {
    Auto = "auto",
    FixedCount = "fixed count",
    FixedWidth = "fixed width"
}
export declare enum JoinStrategy {
    Inner = "inner",
    LeftOuter = "join_left",
    RightOuter = "join_right",
    FullOuter = "join_full"
}